Motivational speakers and mental health counselors often say that the single most important personality trait one can develop is self esteem.
Difference Between Self Confidence And Self Esteem
Often, the term self-esteem or self-worth is used interchangeably with the term self-confidence. But there is a subtle distinction between the two terms.While self-confidence has to do with your belief in yourself and your abilities, self-esteem has more to do with how much value you put on yourself as a person.
The difference between self-confidence and self-esteem is the difference between -
"I can do it!" Vs "Am I worth it?".
"A man cannot be comfortable without his own approval." -Mark Twain
Does having a good self confidence imply a feeling of great self worth as well?
Unfortunately, No.
Gaining self confidence, or getting a positive boost to one's belief in his or her abilities, does not necessarily translate to an equivalent increase in terms of one's estimation of one's self worth.
Case in point: Some of the popular celebrities who radiate confidence on stage, but suffer in quiet desperation to the point of being driven to depression in their private lives. And that's possibly because their feeling of self worth is not keeping pace with all they have achieved in their lives.
But the converse is always true - A low self esteem always leads to low belief in one self (low self-confidence), and to boost self esteem is a natural way to boost self-confidence.
"Self respect isn't everything; it's just that there's nothing without it." -Gloria Steinem

Are you someone who learns better by listening? If so, you may gain good insights from Caroline Myss' audio book which explores what self esteem is,